1999 chevy suberban. it will turn over but wont start, I turn the key to start position no dash lights come on for about 3 to5 seconds the fuel gauge pegs to full then goes to normal position, at that time i hear a click under dash then it starts. also while driveing the engine will shut down.

try disconnecting the battery negative with the key in the run position..this kills the computer..then shut the key off and reconnect the negative cable, turn the key to run position and listen for the fuel pump to come on 2-3 seconds try to start..repeat this 2-3 times if still an issue.. repost findings

Try this. With the vehicle in park, turn on the key but do not start the vehicle. pump the accelerator slowly 3 times to the floor. The light should blink 3 times. Turn you key off. The light should be reset.

Try to do the crank relearn:
Ensure that your battery is fully charged before attempting the relearn procedure. Do not leave any battery charger or jumper cables attached to the battery. Close the hood completely. Some applications require that the doors remain closed during the procedure.
96-99 S10
1. Rotate the key to the start position to attempt to start the vehicle (the vehicle will not start).
Allow the key to return to the all position (same as if the vehicle would have started). The theft system light will flash (or stay lit) on the dash for approximately 10 minutes.
2. When the theft system telltale stops flashing (or turns oft) turn the key to the off position for 5 seconds and then attempt tostart the vehicle. The vehicle should start on this cycle.
3. Once the vehicle is running, the password relearn is complete.

00 + S10
1. Rotate the key to the start position to attempt to start the vehicle (the vehicle will not start). Allow the key to return to the on position. (same as if the vehicle would have started)
2. The theft system light will flash (or stay lit) on the dash for approximately 10 minutes.
3. When the theft system telltale stops flashing (or turns off) turn the key to the off position for 5 seconds and then attempt to start the vehicle.
4. Repeat steps 1 through 3 two more times for a total of 3 cycles/30 minutes.
5. On the next cycle of turning the ignition key from off to crank the vehicle should start
6. Once the vehicle is running, the password is learned and this completes the cycle.
7. Clear any DTC's with a scan tool if necessary. DTC history will be cleared after 100 ignition cycles.
Thank you for using fixya and keep me posted, be glad to help you get your jimmy running 100%

When you turn the key to the "run" position, listen and see if you can hear a buzzing noise coming from the under the bed. This is your fuel pump buzzing for 2-3 seconds. If it isnt buzzing, you most likely have a faulty fuel pump. If it does buzz, check the fuel pressure. There is a schrader valve on the fuel line under the hood near the back of the intake manifold. You will need a fuel pressure gauge to check the pressure. If it doesnt build 50-60 psi, it will most likely, again, need a fuel pump.

check connections from the battery to starter if ok tap on the starter with a hammer as a helper starts the engine if it starts replace starter before you do dose the key turn all the way forward normal starting position? reason i ask is why did you replace the ignition cyl lock?

First turn the key to the run position, (not start). Push the gas pedal down to the floor 3 times within five seconds. Turn the key off and then cycle back on and start the truck. The indicator should flash five times and go out.
It may take a few tries.

My 2000 cavalier has done this for 6 months. You take your key out then open your door, wait ten minutes and the system resets itself and the car will start-annoying you bet!!!

Your car is equipped with a system called PASSKEY standard on all GM cars and light trucks, try the following procedure to reset the system, the battery being dead will trigger the system.

PASSKEY LOCKOUT RESET GM CARS 1999 UP
1) Put the key in the ignition and turn to the "ON" position. Leave it that way for 10 minutes. After 10 minutes turn the key and take it out. Repeat this process (2) more times (3 times, 30 minutes total) This should reset the passlock system to recognize your key.

Does the dash gauges and digital mileage and idiot lights work when you turn the key on?

turn the key to the ON position without starting it. within 5 seconds push the gas pedal to the floor 3 times.